Installation view of Marcel Broodthaers’s 2015 retrospective at the Fridericianum, Kassel, Germany. ART, FROM LEFT: ©2015 THE ESTATE OF MARCEL BROODTHAERS/VG BILD-KUNST, BONN/COLLECTION VAN ABBEMUSEUM, EINDHOVEN; ©2015 THE ESTATE OF MARCEL BROODTHAERS/VG BILD-KUNST, BONN/ESTATE MARCEL BROODTHAERS; PHOTO: ©ACHIM HATZIUS